This circuit provides a reference voltage for calibration. He uses a diode in a small thermal chamber. We found this circuit in an old american documentation.
This circuit was found in documentation from the 90s in Europe. The circuit shows how to vary the...
This voltage inverter circuit was found in a Mullard transistor manual from 1960. Information on...
The interruption of the light incident on the phototransistor causes the trip of this circuit that can...